Air Source Heat Pumps for space heating and cooling have been installed and verified to be operational to manufacturer’s specification by the HVAC installer.

Duct systems for heating and cooling air distribution had their total leakage measured, and they comply with the building code.

The solar DHW System has been installed and verified to be operational by the system installer and has a reporting mechanism to detect if the system has malfunctioned so it can be repaired, to avoid the issue of unconscious excessive DHW backup energy use. The system is expected to serve the majority of annual DHW use, estimated by RESNET criteria as approximately 18250 gallons / year.

The Zehnder hygienic and point source air exchange system has been commissioned by a Zehnder certified commissioning agent, with results outlined in the issued ventilation system commissioning report. The ventilation system has been balanced to within 10% of flow rate at the fresh air / stale air ports to outside to minimize core freeze up potential and maximize heat exchange efficacy. The ventilation system flows in each room have been measured using a moving vane anemometer and adjusted repetitively to insure adequate air extraction and supply as stipulated in the ventilation system plan. Ventilation system power has been measured.

As required by Passive House Institute for final certification, a bidirectional, multipoint blower door test was run using Tectite software to collect data, analyze and graph the results, which were 161 CFM@50 Pa depressurization, 103 CFM@50 Pa depressurization, and PHI/PHA uses the average of these – 132 CFM@50 Pa to compare to the certification criteria of 0.6 ACH@50 Pa.